Method for manufacturing soft magnetic iron powder

[Object] Provided is a method for manufacturing soft magnetic iron powder with which it is possible to effectively increase the amorphous material fraction of softmagnetic iron powder even in the case where the amounts of ferrous elements (Fe, Co, and Ni) are large.[Solution] A method for manufactur...

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Bibliographische Detailangaben
Hauptverfasser:	NAKASEKO, Makoto, MURAKI, Mineo, TAKASHITA, Takuya, NAKAMURA, Naomichi
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CASTING CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	[Object] Provided is a method for manufacturing soft magnetic iron powder with which it is possible to effectively increase the amorphous material fraction of softmagnetic iron powder even in the case where the amounts of ferrous elements (Fe, Co, and Ni) are large.[Solution] A method for manufacturing soft magnetic iron powder, the method including ejecting high-pressure water to collide with a molten metal stream falling vertically downward, breaking up the molten metal stream into metal powder, and cooling the metal powder, in which, when a falling rate of the molten metal stream per unit time is defined as Qm (kg/min) and an ejection rate of high-pressure water per unit time is defined as Qaq (kg/min), a mass ratio (Qaq/Qm) is 50 or more, and a total content of ferrous constituents (Fe, Ni, and Co) is 76 at% or more.